NVD - CVE-2009-1895

CVE-2009-1895 Detail

Modified

This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.

Description

The personality subsystem in the Linux kernel before 2.6.31-rc3 has a PER_CLEAR_ON_SETID setting that does not clear the ADDR_COMPAT_LAYOUT and MMAP_PAGE_ZERO flags when executing a setuid or setgid program, which makes it easier for local users to leverage the details of memory usage to (1) conduct NULL pointer dereference attacks, (2) bypass the mmap_min_addr protection mechanism, or (3) defeat address space layout randomization (ASLR).

Source: MITRE
Description Last Modified: 07/16/2009

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 7.2 HIGH
Vector: (AV:L/AC:L/Au:N/C:C/I:C/A:C) (V2 legend)
Impact Subscore: 10.0
Exploitability Subscore: 3.9

Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
http://blog.cr0.org/2009/06/bypassing-linux-null-pointer.html	Patch
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f9fabcb58a6d26d6efde842d1703ac7cfa9427b6	Vendor Advisory
http://patchwork.kernel.org/patch/32598/	Patch Vendor Advisory
http://wiki.rpath.com/Advisories:rPSA-2009-0111
http://www.debian.org/security/2009/dsa-1844
http://www.debian.org/security/2009/dsa-1845
http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc3	Vendor Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2011:051
http://www.redhat.com/support/errata/RHSA-2009-1193.html
http://www.redhat.com/support/errata/RHSA-2009-1438.html
http://www.securityfocus.com/archive/1/505254/100/0/threaded
http://www.securityfocus.com/archive/1/507985/100/0/threaded
http://www.securityfocus.com/archive/1/512019/100/0/threaded
http://www.securityfocus.com/bid/35647
http://www.ubuntu.com/usn/usn-807-1
http://www.vmware.com/security/advisories/VMSA-2009-0016.html
http://www.vupen.com/english/advisories/2009/1866	Patch Vendor Advisory
http://www.vupen.com/english/advisories/2009/3316
https://bugs.launchpad.net/bugs/cve/2009-1895
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11768
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7826
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9453
https://rhn.redhat.com/errata/RHSA-2009-1540.html
https://rhn.redhat.com/errata/RHSA-2009-1550.html
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00166.html
https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00223.html

References to Check Content

Identifier:: oval:org.mitre.oval:def:11768
Check System:: http://oval.mitre.org/XMLSchema/oval-definitions-5
Hyperlink:: http://oval.mitre.org/repository/data/DownloadDefinition?id=oval:org.mitre.oval:def:11768

Identifier:: oval:org.mitre.oval:def:7826
Check System:: http://oval.mitre.org/XMLSchema/oval-definitions-5
Hyperlink:: http://oval.mitre.org/repository/data/DownloadDefinition?id=oval:org.mitre.oval:def:7826

Identifier:: oval:org.mitre.oval:def:9453
Check System:: http://oval.mitre.org/XMLSchema/oval-definitions-5
Hyperlink:: http://oval.mitre.org/repository/data/DownloadDefinition?id=oval:org.mitre.oval:def:9453

Technical Details

Vulnerability Type (View All)

Configuration (CWE-16)

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Change History

3 change records found - show changes

CVE Modified by MITRE - 10/10/2018 3:38:52 PM

Action	Type	Old Value	New Value
Added	Reference		http://www.securityfocus.com/archive/1/505254/100/0/threaded [No Types Assigned]
Added	Reference		http://www.securityfocus.com/archive/1/507985/100/0/threaded [No Types Assigned]
Added	Reference		http://www.securityfocus.com/archive/1/512019/100/0/threaded [No Types Assigned]
Removed	Reference	http://www.securityfocus.com/archive/1/archive/1/512019/100/0/threaded [No Types Assigned]
Removed	Reference	http://www.securityfocus.com/archive/1/archive/1/507985/100/0/threaded [No Types Assigned]
Removed	Reference	http://www.securityfocus.com/archive/1/archive/1/505254/100/0/threaded [No Types Assigned]

CVE Modified by MITRE - 9/28/2017 9:34:38 PM

Action	Type	Old Value	New Value
Added	Reference		https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11768 [No Types Assigned]
Added	Reference		https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7826 [No Types Assigned]
Added	Reference		https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9453 [No Types Assigned]
Removed	Reference	http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:11768 [No Types Assigned]
Removed	Reference	http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:7826 [No Types Assigned]
Removed	Reference	http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:9453 [No Types Assigned]

Quick Info

CVE Dictionary Entry:
CVE-2009-1895
NVD Published Date:
07/16/2009
NVD Last Modified:
10/10/2018

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